1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
irakobra [83]
2 years ago
7

Solve -6x+3less than equal to 21

Mathematics
1 answer:
mylen [45]2 years ago
3 0

Answer: -3

Step-by-step explanation:

You might be interested in
8+8b+2b = 2b+16 solve
Mamont248 [21]
B=1....................
6 0
3 years ago
15v − -14v − -14 = -15 solve for v ps..... help plz
Alchen [17]

Solve for  v  by simplifying both sides of the equation, then isolating the variable.

v = -1

5 0
3 years ago
Two different simple random samples are drawn from two different populations. The first sample consists of 30 people with 16 hav
Furkat [3]

Answer:

  • There is no significant evidence that p1 is different than p2 at 0.01 significance level.
  • 99% confidence interval for p1-p2 is  -0.171 ±0.237 that is (−0.408, 0.066)

Step-by-step explanation:

Let p1 be the proportion of the common attribute in population1

And p2 be the proportion of the same common attribute in population2

H_{0}: p1-p2=0

H_{a}: p1-p2≠0

Test statistic can be found using the equation:

z=\frac{p2-p1}{\sqrt{{p*(1-p)*(\frac{1}{n1} +\frac{1}{n2}) }}} where

  • p1 is the sample proportion of the common attribute in population1 (\frac{16}{30} =0.533)
  • p2 is the sample proportion of the common attribute in population2 (\frac{1337}{1900} =0.704)
  • p is the pool proportion of p1 and p2 (\frac{16+1337}{30+1900}=0.701)
  • n1 is the sample size of the people from population1 (30)
  • n2 is the sample size of the people from population2 (1900)

Then z=\frac{0.704-0.533}{\sqrt{{0.701*0.299*(\frac{1}{30} +\frac{1}{1900}) }}} ≈ 2.03

p-value of the test statistic is  0.042>0.01, therefore we fail to reject the null hypothesis. There is no significant evidence that p1 is different than p2.

99% confidence interval estimate for p1-p2 can be calculated using the equation

p1-p2±z*\sqrt{\frac{p1*(1-p1)}{n1}+\frac{p2*(1-p2)}{n2}} where

  • z is the z-statistic for the 99% confidence (2.58)

Thus 99% confidence interval is

0.533-0.704±2.58*\sqrt{\frac{0.533*0.467}{30}+\frac{0.704*0.296}{1900}} ≈ -0.171 ±0.237 that is (−0.408, 0.066)

7 0
3 years ago
For the polynomial shown below find f(1).<br><br><br>f(x)=3x^4-x^2+4x-2
Feliz [49]

Answer:

f(1)=4

Step-by-step explanation:

f(1)=3(1)^4-(1)^2+4(1)-2

f(1)=3(1)-1+4-2

f(1)=3-1+4-2

f(1)=4

6 0
3 years ago
Jesse went to the post
skelet666 [1.2K]

Answer:

9 wagon stamps and 1 sailboat stamp!

Step-by-step explanation:

7×4= 28

28+3=31

3 0
2 years ago
Other questions:
  • Permutations and combination question ^^
    12·1 answer
  • Help me all please!!
    5·2 answers
  • ASAP help me please!!!!!!!!!!!!!!!!!!
    14·1 answer
  • The life of light bulbs is distributed normally. The standard deviation of the lifetime is 25 hours and the mean lifetime of a b
    9·1 answer
  • Just use this for free points.
    10·2 answers
  • What is the decimal multiplayer to increase by 4.1%
    14·2 answers
  • How does geometry fit into your life? EXPLAIN!!
    7·1 answer
  • 141,760.3 minus 66,744.85 equals _______ rounded to the nearest tenth?
    12·2 answers
  • What is 1/2 of 7/8? In fraction firm
    12·1 answer
  • An item is regularly priced at $60. It is on sale for 55% off the regular price. What is the sale price?
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!